Has anybody used one of these things. I don't climb and it is too late for me to start. I have a wood lot I poke around in. Have some trees I want to encourage to fall certain ways. Used to climb a ladder, put a line on the tree, cut the first notch, put a strain on the line , and drop it , most of the time right on the line. Don't want to haul the ladder around anymore. How well does that sling shot thing work? BTW when it is really hairy I hire it out anyway.